Re: Interrupt routing code

On Mon, Nov 07, 2005 at 02:31:53PM -0800, Matthew Dillon wrote:
:
: :I discovered a problem possibly related to the new interrupt code. My Toshiba
: :laptop has a LinkSys EtherFast 10/100 PC Card NIC that always worked fine
: :before.
: :
: :Now, the card gives messages about 'IRQ 11 livelock exceeded 50000' or
: :something similar. If more details are needed, I can provide them when I get
: :home later this afternoon.
: :
: :The messages continue repeating over and over, and DHCP is never able to get
: :an address.
: :
: :jm
:
: Hmm. Well, the interrupt routing code hasn't actually been changed,
: it works the same as it did before (or should). But there have been
: changes made to the livelock detection code as well as changes made
: to ACPI, and some work has been done on the interrupt handler.
:
: So try:
:
: * Try booting without ACPI
This old laptop doesn't like ACPI, so I have it turned off.
: * Try increasing the livelock limit (kern.livelock_limit) to 100000.
: (though I doubt this fix the problem).
I'll try that today.
: Also, try booting older ISOs (assuming your laptop has a CD drive)
: and see at what point the failure begins.
I went from the last preview a month or so ago to HEAD, so that would make
backtracking a bit more difficult. Especially since I don't really have the
bandwidth to burn a bunch of ISOs.
Is there anything else I can do to narrow down the problem?
jm
--
'What's good for the goose is good for the gander.
What the hell is a gander, anyway?' - George Costanza